/* 公共flex，垂直居中，再两边 */
	 .rewoundFlex {
	 	display: flex;
	 	justify-content: space-between;
	 	align-items: center;
	 }

	 /* 公共flex，垂直水平居中 */
	 .centerFlex {
	 	display: flex;
	 	justify-content: center;
	 	align-items: center;
	 }

	 /* 公共flex，垂直居中，从头排 */
	 .startFlex {
	 	display: flex;
	 	justify-content: flex-start;
	 	align-items: center;
	 }

	 /* 公共flex，垂直居中，从侧轴排 */
	 .sideFlex {
	 	display: flex;
	 	flex-direction: column;
	 	justify-content: center;
	 	align-items: center;
	 }
